Table 5.

Values of Patient 1 and Patient 2 inhalation pathway variable resistance values, ventilator PIP and resulting tidal volume for Patient 1 and Patient 2 when adjusting variable resistors and PIP to achieve equivalent tidal volume (C–C), lower tidal volume in Patient 2 (C–C(−)) and higher tidal volume in Patient 2 (C–C(+)). Tidal volume in Patient 1 is maintained throughout.

Patient 1–Patient 2	P1 variable resistor (cmH2O/L/s)	P2 variable resistor (cmH2O/L/s)	PIP (cmH2O)	tidal volume (ml)
				Patient 1	Patient 2
C–C	0	0	18.5	494.5	494.5
C–C(−)	0	16.67	18.5	494.2	379.3
C–C(+)	16.67	0	22.67	496.5	646.9